Provide applicatiion assets (#18973)

- improve backend
- improve frontend

<img width="1293" height="824" alt="image"
src="https://github.com/user-attachments/assets/7a4633f1-85cd-4126-b058-dbeae6ba2218"
/>

packages/twenty-shared/src/application/applicationType.ts

@@ -14,9 +14,10 @@ export type ApplicationManifest = SyncableEntityOptions & {
   logoUrl?: string;
   screenshots?: string[];
   aboutDescription?: string;
-  providers?: string[];
   websiteUrl?: string;
   termsUrl?: string;
+  emailSupport?: string;
+  issueReportUrl?: string;
   preInstallLogicFunctionUniversalIdentifier?: string;
   postInstallLogicFunctionUniversalIdentifier?: string;
   settingsCustomTabFrontComponentUniversalIdentifier?: string;